SpinFit CP145:- >Wide ear tip core, suitable for earphones with a wide ear nozzle. >Ear tip core has an inner diameter of 4.5mm, suitable for IEMs with a 5-6mm ear nozzle diameter. >Designed to provide a comfortable fit even if the shell size is huge. >Improves isolation with cleaner bass, rich mids, and smooth treble. >Premium soft silicone material for great comfort and durability. Patent design SpinFit s unique sound tube is attached to cushion structure. This configuration enables the ear can 360 ° free rotation, this design has been multi-national patent. Patent acquisition Country: United States, EU, Japan, Taiwan, mainland China Enhance the sound quality SpinFit with the cushion structure, it is possible to make the earplug 360 °rotate freely ,it is more smoothly reaching deeper in the ear canal. Headphones deeper ear canal can be isolated from the surrounding noise, better show a clear treble and rich bass, making music released closer to the original sound, full of presence. Comfortable to wear SpinFit with cushion configuration enables the earplug 360 ° freely rotate more smoothly thorough deep canal, obedient shape of the ear canal, there will be no feeling of pressure when wearing conventional eartips. Traditional earplugs no cushion configuration, can only enter into the first turning of the ear canal after forcing traditional clothes ear-shaped earplugs to produce pressure, but it was able to smoothly SpinFit ear canal deep depth, not You will feel oppressed. The difference between traditional earbuds and SpinFit SpinFit can obedient ear-shaped rotating, smooth deep into the ear. Because obedient to the depths of the ear, can greatly enhance the treble and bass, showing a wider range. In the first turning , the sound tube will not be bent.so that it can maintain sound tube is smooth, the sound does not become lower. SpinFit wear comfortable, no pressure, releasing music closer to the original sound, full of presence. Quality verification When listening to music with headphones, if the eardrum is closer to headset sound hole and boost the high range, showing fine treble; also allows air does not leak, extended low range, showing heavy bass. Headphones can penetrate deep in the ear, the sealed changed for the better, and thus enhance the high range and low range, show a better sound. Compatibility Different models are designed with different core sizes to fit all major earphone brands. Please confirm earphone model / measurements before purchase!